Firefox3 Plugins

I've been using Hardy 8.04 which implements Firefox3.0b5.
Still many of FF plug-ins are not supported for FF3. If you want to use it by any means.

1) about:config 
2) Choose New>Boolean. Then "checkCompatibility" to "false".
3) Choose New>Boolean. "checkUpdateSecurity" to "false".
4) Restart Firefox and done ;-)